Ubuntu.comUB:CVE-2021-32606CVE-2021-32606
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.2 High
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
0.0004 Low
EPSS
Percentile
13.3%
In the Linux kernel 5.11 through 5.12.2, isotp_setsockopt in
net/can/isotp.c allows privilege escalation to root by leveraging a
use-after-free. (This does not affect earlier versions that lack CAN ISOTP
SF_BROADCAST support.)
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 21.04 | noarch | linux | < 5.11.0-17.18 | UNKNOWN |
| ubuntu | 21.04 | noarch | linux-aws | < 5.11.0-1007.7 | UNKNOWN |
| ubuntu | 21.04 | noarch | linux-azure | < 5.11.0-1005.5 | UNKNOWN |
| ubuntu | 22.04 | noarch | linux-azure-fde | < any | UNKNOWN |
| ubuntu | 21.04 | noarch | linux-gcp | < 5.11.0-1007.7 | UNKNOWN |
| ubuntu | 22.04 | noarch | linux-gkeop | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-gkeop-5.15 | < any | UNKNOWN |
| ubuntu | 21.04 | noarch | linux-kvm | < 5.11.0-1007.7 | UNKNOWN |
| ubuntu | 21.04 | noarch | linux-oracle | < 5.11.0-1006.6 | UNKNOWN |
| ubuntu | 21.04 | noarch | linux-raspi | < 5.11.0-1008.8 | UNKNOWN |
References
www.openwall.com/lists/oss-security/2021/05/12/1
github.com/nrb547/kernel-exploitation/blob/main/cve-2021-32606/cve-2021-32606.md
launchpad.net/bugs/cve/CVE-2021-32606
nvd.nist.gov/vuln/detail/CVE-2021-32606
security-tracker.debian.org/tracker/CVE-2021-32606
www.cve.org/CVERecord?id=CVE-2021-32606
www.openwall.com/lists/oss-security/2021/05/11/16
Related
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.2 High
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
0.0004 Low
EPSS
Percentile
13.3%